Incredibly, the bench shown is made from just two 4x8 sheets of 1/2-inch thick MDF. The two sheets are cut to yield parts for three torsion boxes - or T-boxes for short. One T-box is the workbench top and the remaining two T-boxes serve as pedestals. If you've never tried T-box construction before, it's really quite easy. To help you, we've detailed the process in a series of step-by-step illustrations. Our $30 materials estimate covers only the sheet stock and the hardware, and does not include the vise.